42,000cc and 1500hp supercharged Bentley-Packard V12 engine fire-up

Supercharged Bentley-Packard V12  engine starting up. Each cylinder of this monster 42 liter engine has 3500cc.

It has 4-valves per cylinder and 24 exhausts (1x exhaust pipe for each exhaust valve).

Very rarely such engines are built and very rarely they are presented to people.

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